My banking account has been blocked since july with no valid reason

My banking account has been blocked since july with no valid reason.I submitted all required documents still no progress.This is now affecting my livlihood,im unable to access funds its also affecting my small business clients no longer want to do business with me due to reason why my banking details is no longer valid.Been back & forth to a nearby branch trying to resolve this however i havent been succesfull.Today i was told i need to submit "detailed documents" i have 4 different affidavids each time i add on what they tell me to & now i have to go get yet another affidavid.I dont have invoices for most stock i purchased,didnt think it would be needed.Now need to get all invoices for purchased stock,POP for the sales & proof of orders for the months march-june.I submitted over 100 pages(invoices to customers and proof of payments of sales dating march-june).Me requesting invoices & POP from suppliers and customers from months ago with no valid reason sends a red flag and can affect future business.